package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {


    @Autowired
private AttrAttrgroupRelationDao attrAttrgroupRelationDao;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private AttrGroupDao attrGroupDao;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    @Transactional
    public void saveAttr(AttrVo attrVo) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attrVo, attrEntity);
        this.save(attrEntity);
        if (attrVo.getAttrType() == ProductConstant.AttrEnum.BASE_ATTR_TYPE.getCode() && attrVo.getAttrGroupId() != null) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationEntity.setAttrGroupId(attrVo.getAttrGroupId());
            relationEntity.setAttrSort(attrVo.getAttrSort());
            attrAttrgroupRelationDao.insert(relationEntity);
        }

    }

    @Override
    public PageUtils queryAttrPage(Map<String, Object> params, Long catelogId, String attrType) {
        LambdaQueryWrapper<AttrEntity> wrapper = new LambdaQueryWrapper<>();
        String key = (String) params.get("key");
        Integer type=attrType.equalsIgnoreCase("base")?1:0;
        wrapper.eq(AttrEntity::getAttrType, type);
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((wrapper1)->{
                wrapper1.eq(AttrEntity::getAttrId, key).or().like(AttrEntity::getAttrName, key);
            });
        }
        if (catelogId != 0) {
            wrapper.eq(AttrEntity::getCatelogId, catelogId);
        }
        IPage<AttrEntity> page = this.page(
                    new Query<AttrEntity>().getPage(params),
                   wrapper
            );
        //封装分类和组的名字
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            Long cateId = attrEntity.getCatelogId();
            CategoryEntity category = categoryService.getById(cateId);
            if (category != null) {
                attrRespVo.setCatelogName(category.getName());
            }
            //如果是基本属性，则设置分组名字
            if (attrType.equalsIgnoreCase("base")) {
                LambdaQueryWrapper<AttrAttrgroupRelationEntity> queryWrapper = new LambdaQueryWrapper<>();
                queryWrapper.eq(AttrAttrgroupRelationEntity::getAttrId, attrEntity.getAttrId());
                AttrAttrgroupRelationEntity relationEntity = attrAttrgroupRelationDao.selectOne(queryWrapper);
                if (relationEntity != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                    if (attrGroupEntity != null) {
                        attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                    }
                }
            }
            return attrRespVo;
        })).collect(Collectors.toList());
        PageUtils pageUtils = new PageUtils(page);
        pageUtils.setList(respVos);
        return pageUtils;
        }

    @Override
    public AttrRespVo getAttrDetail(Long attrId) {
        AttrEntity attrEntity = this.getById(attrId);
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        AttrRespVo attrRespVo = new AttrRespVo();
        BeanUtils.copyProperties(attrEntity, attrRespVo);
        attrRespVo.setCatelogPath(catelogPath);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.BASE_ATTR_TYPE.getCode()) {
            LambdaQueryWrapper<AttrAttrgroupRelationEntity> wrapper = new LambdaQueryWrapper<>();
            wrapper.eq(AttrAttrgroupRelationEntity::getAttrId, attrId);
            AttrAttrgroupRelationEntity relationEntity = attrAttrgroupRelationDao.selectOne(wrapper);
            if (relationEntity != null) {
                attrRespVo.setAttrGroupId(relationEntity.getAttrGroupId());
                attrRespVo.setAttrSort(relationEntity.getAttrSort());
            }
        }
        return attrRespVo;

    }

    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);
        if (attr.getAttrType() == ProductConstant.AttrEnum.BASE_ATTR_TYPE.getCode()) {
            //查看关联表，有则删除重新插入，没有则插入
            LambdaQueryWrapper<AttrAttrgroupRelationEntity> wrapper = new LambdaQueryWrapper<AttrAttrgroupRelationEntity>().eq(AttrAttrgroupRelationEntity::getAttrId, attr.getAttrId());
            Integer count = attrAttrgroupRelationDao.selectCount(wrapper);
            if (count > 0) {
                attrAttrgroupRelationDao.delete(wrapper);
            }
            if (!StringUtils.isEmpty(attr.getAttrGroupId())) {
                AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
                BeanUtils.copyProperties(attr,relationEntity);
                attrAttrgroupRelationDao.insert(relationEntity);
            }
        }

    }

    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {

       //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.BASE_ATTR_TYPE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;


    }


}
